What is the first feature-length episode in the Outer Banks television series?

The Season 4 finale is the first feature-length episode in the Outer Banks television series.

Netflix and the show's creators described the Season 4 finale as the first feature-length episode of Outer Banks. Its extended runtime allows the story to deliver a major turning point before the final season begins, including JJ Maybank's death and the revelation involving Chandler Groff.

This episode is not the Season 5 premiere. Instead, it sets the stage for Season 5 by leaving the Pogues stranded, grieving, and determined to seek revenge. The distinction is useful because promotional coverage often discusses the Season 4 finale and Season 5 together, even though they belong to different seasons.